Migrating an existing SDK built for AXIS 82/83 to the new hardware in AXIS 82+/83+

Description

The AXIS 82 Developer Board and the AXIS 83 Device Server have been replaced by their successors AXIS 82+ Developer Board and the AXIS 83+ Device Server. To move an existing code-tree built for the AXIS 82/83 to the AXIS 82+/83+ a few minor changes are required. This document describes the required changes, which are applicable on previous releases 1.90, 1.91 and 1.92 of the AXIS 82/83 SDK.

SDRAM

The AXIS 82+/83+ has 32 Mbytes of RAM mounted compared to the 16 Mbytes of RAM on the AXIS 82/83. Change the following parameters in the configuration file os/linux/.config to adapt to the changes:

  1. CONFIG_ETRAX_DRAM_SIZE:                    16 to 32

  2. CONFIG_ETRAX_DEF_R_SDRAM_CONFIG:    00e03636 to 09e05757

Flash

To fully utilize the 8 Mbytes of Flash (6 Mbytes of flash on AXIS 82/83) changes to the ptablespec (The Partition Table Specification file) are necessary. Note, this file is generated by make in release 1.92 and in this case parameters with prefix PSIZE_ in the top-level Makefile needs to be modified in order to generate the correct ptablespec file. In earlier releases modifications to the ptablespec file (in the top-level directory) will directly be reflected in the partition table of the image (fimage). Make sure that the hexadecimal sum of all partitions equals less or equal to the total size of available flash memory, i.e. 8 Mbytes (0x800000).

    Example: Change top-level Makfile, release 1.92

                        ...
                        PSIZE_rescue = 0x010000
                        ...
                        PSIZE_kernel = 0x350000
                        ...
                        PSIZE_jffs2_0 = 0x4a0000
                                ...

    Example: Change ptablespec file, release 1.90/1.91

                        ...
                        rescue 0x010000 ro rescue rescue.img   
                        flash1 0x350000 rw kernel flash1.img
                        flash2 0x4a0000 rw jffs2 flash2.img
                        ...

HWID

The hardware ID (HWID) is used to ensure that the correct firmware image is loaded into the correct product at FTP flash upgrades. AXIS 82/83 has a different HWID than the AXIS 82+/83+ because of the hardware differences between the products. Change the HWID parameter's value in the top-level Makefile from 401 (HWID of AXIS 82/83) to 406 (HWID of AXIS 82+/83+).

    Example: Change top-level Makfile

                        ...
                        HWID = 406
                        ...